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Suppose that in a cell, the actual concentration of glucose-6-phosphate is 3.9 x 10- M, and the actual concentration of fructose-6-phosphate is 1.5 x 10- M. 1) Do you EXPECT that with this starting mass action ratio the reaction will go forward (as written, G-6-P → F-6-P), or in reverse (F-6-P →G-6-P), and WHY? 2) Now calculate the actual free energy change (AG') for this reaction (in the forward direction) at 298K. (Show work and state units,

Suppose that in a cell, the actual concentration of glucose-6-phosphate is 3.9 x 10- M, and the actual concentration of fructose-6-phosphate is 1.5 x 10- M. 1) Do you EXPECT that with this starting mass action ratio the reaction will go forward (as written, G-6-P → F-6-P), or in reverse (F-6-P →G-6-P), and WHY? 2) Now calculate the actual free energy change (AG') for this reaction (in the forward direction) at 298K. (Show work and state units,

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Table 1: Relationship between equilibrium constant and standard free-energy change of chemical reactions (Lehninger 6" ed.) In the pathway for glucose degradation to pyruvate (the glycolytic pathway), glucose 6-phosphate is isomerized to fructose 6-phosphate in a reaction catalyzed by phosphoglucose isomerase: glucose 6-phosphate (G-6-P) fructose 6-phosphate (F-6-P) AGO" = +1.7 kJ/mol
Transcribed Image Text:Table 1: Relationship between equilibrium constant and standard free-energy change of chemical reactions (Lehninger 6" ed.) In the pathway for glucose degradation to pyruvate (the glycolytic pathway), glucose 6-phosphate is isomerized to fructose 6-phosphate in a reaction catalyzed by phosphoglucose isomerase: glucose 6-phosphate (G-6-P) fructose 6-phosphate (F-6-P) AGO" = +1.7 kJ/mol
Suppose that in a cell, the actual concentration of glucose-6-phosphate is 3.9 x 10- M, and the actual concentration of fructose-6-phosphate is 1.5 x 10- M. 1) Do you EXPECT that with this starting mass action ratio the reaction will go forward (as written, G-6-P → F-6-P), or in reverse (F-6-P G-6-P), and WHY? 2) Now calculate the actual free energy change (AG') for this reaction (in the forward direction) at 298K. (Show work and state units.)
Transcribed Image Text:Suppose that in a cell, the actual concentration of glucose-6-phosphate is 3.9 x 10- M, and the actual concentration of fructose-6-phosphate is 1.5 x 10- M. 1) Do you EXPECT that with this starting mass action ratio the reaction will go forward (as written, G-6-P → F-6-P), or in reverse (F-6-P G-6-P), and WHY? 2) Now calculate the actual free energy change (AG') for this reaction (in the forward direction) at 298K. (Show work and state units.)
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